Medical Definition of EpiduralEpidural: Outside the dura, the outermost, toughest, and most fibrous of the three membranes (meninges) covering the brain and the spinal cord. An epidural hematoma is a collection of blood beneath the skull but outside the dura. Last Editorial Review: 6/9/2016 Back to MedTerms online medical dictionary A-Z List Need help identifying pills and medications? |


